Rhodium/24k Gold Plated, Champagne Color-changing Cubic Zirconia (CZ) Pendant Necklace, 16+2" Extender Radiant premium grade cubic zirconia gemstone with multiple color-changing undertones. 15mm (.6 inch) 33.35 CZ carat weight, multi-faceted stone set in 4-prong, vintage inspired mounting with two-tone white and bright yellow gold finishes. Exclusive mounting designed to elevate the stone to a projected height of 13mm (.5 inch). The 16 inches, 3.5mm box chain can be lengthened to 18 inches with its 2 inches extension and lobster-claw clasp. Nickel free pendant and chain cast in brass and heavily plated with rhodium and embellished with 24 karat bright yellow gold electroplate. Rhodium, 24k gold overlays, and plating far exceed industry standards.